Rajan Wilcox
The RE-M3 Mainsail Liquid Fuel Engine is a powerful engine used to provide thrust for larger rockets. Knowing how much fuel to put in an engine is important for several reasons, including estimating the range you can safely expect to run and determining the cost of operating the engine. The amount of fuel required depends on various factors, such as engine size, power, and the number of cylinders. For the Mainsail engine, users have shared their experiences with different fuel tank setups, such as using a Rockomax X200-32 Fuel Tank or a combination of orange tanks and smaller fuel tanks, to prevent overheating and optimize performance.
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What You'll Learn
- The RE-M3 Mainsail Liquid Fuel Engine is one of the heaviest and most powerful large-diameter liquid fuel engines
- The Mainsail engine is used to provide thrust for larger rockets and lower stages
- The Mainsail engine can overheat and explode if run at 100% throttle
- The Mainsail engine has a thrust-to-weight ratio and specific impulse
- The Mainsail engine can be paired with a big fuel tank for cruise control into orbit
The RE-M3 Mainsail Liquid Fuel Engine is one of the heaviest and most powerful large-diameter liquid fuel engines
The Mainsail has a high thrust-to-weight ratio and good specific impulse, but it can consume large amounts of fuel. In fact, the engine's high thrust, combined with thrust vectoring, can destroy poorly built rockets during ascent. For this reason, throttling down or limiting gimbaling is recommended. Prior to version 0.22, the Mainsail would quickly explode from overheating when run on maximum throttle and placed under a Rockomax Jumbo-64 Fuel Tank. This issue can be mitigated by placing a small strut or fuel tank between the engine and the Jumbo-64.
The Mainsail was once the largest engine with the highest thrust, but newer and bigger engines have since been introduced. Despite this, the Mainsail remains a reliable choice for many applications. Its high T/W ratio allows for more fuel in proportion to engine weight, making it a powerful option for interplanetary ships.
Overall, the RE-M3 Mainsail Liquid Fuel Engine is a heavy and powerful option for larger rockets and heavy-lift vehicles. While it may consume large amounts of fuel, its high thrust and good specific impulse make it a popular choice for various applications.
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The Mainsail engine is used to provide thrust for larger rockets and lower stages
The Mainsail engine has a high thrust-to-weight ratio and good specific impulse, although it can consume large amounts of fuel. The high thrust of this engine, combined with thrust vectoring, can destroy poorly built rockets during ascent, so throttling down or limiting gimbaling is often recommended. Prior to version 0.22, the Mainsail engine would quickly explode from overheating when run on maximum throttle and placed under a Rockomax Jumbo-64 Fuel Tank. This issue can be mitigated by placing a small strut or fuel tank between the engine and the Jumbo-64.
The Mainsail engine has undergone several iterations, with improvements made to its thrust and mass. In the stock included Ariane 5, the Mainsail's thrust is lowered to 73.5%. The Mainsail engine is a popular choice for lifting large payloads into orbit, although newer and bigger engines have been developed in recent years.
Overall, the Mainsail engine plays a crucial role in providing thrust for larger rockets and lower stages, making it a reliable option for space missions. However, it is important to carefully manage its fuel consumption and throttling to ensure optimal performance and prevent overheating.
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The Mainsail engine can overheat and explode if run at 100% throttle
The Mainsail engine is a powerful engine used to provide thrust for larger rockets and lower stages. It is typically fuelled by large-diameter liquid fuel tanks. While it is a reliable engine, it does have some drawbacks, including a tendency to overheat when placed under certain fuel tanks, such as the Rockomax Jumbo-64 Fuel Tank. This issue has been resolved in newer versions of the game, but it is important to be aware of this bug when using older versions.
When the Mainsail engine is run at 100% throttle, it can overheat and explode within a minute of launch. This issue is not unique to the Mainsail engine, as several other engines in the game exhibit similar behaviour. The overheating is caused by the engine being placed directly under the fuel tank, which does not allow for effective heat transfer. This issue can be mitigated by placing a small strut or fuel tank between the engine and the fuel tank, which helps to reduce the heat transfer between the two components.
Another way to prevent the Mainsail engine from overheating and exploding is to use a different fuel tank configuration. For example, using a Rockomax X8 tank under the orange tank, followed by an orange tank + a X32 tank, can help to improve heat transfer and prevent overheating. This design is also the most mass-efficient booster design for the Mainsail engine.
Additionally, throttling down the engine or limiting the gimbaling can help to prevent overheating. This can be done manually or by using a setting in MechJeb that automatically monitors engine heat and adjusts the throttle accordingly. By reducing the throttle, the engine produces less heat and can operate without exploding.
While the Mainsail engine has a history of overheating issues when run at full throttle, these issues can be mitigated through careful design and component placement. It is important to monitor engine heat and make adjustments as needed to prevent catastrophic engine failure. With proper care and attention, the Mainsail engine can be a reliable and powerful component of a rocket or spacecraft.
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The Mainsail engine has a thrust-to-weight ratio and specific impulse
The Mainsail engine is a powerful engine that provides thrust for larger rockets and lower stages. It is typically fuelled by large-diameter liquid fuel tanks, such as the Rockomax X200-32 Fuel Tank. The Mainsail engine has a reasonably high atmospheric specific impulse (Isp) of 285 s, but a low vacuum Isp of 310 s.
The specific impulse of an engine is a measure of its efficiency relative to propellant mass. It indicates how effectively the engine achieves a change in speed relative to its weight. In the case of the Mainsail engine, its specific impulse is fairly good, but it can still consume large amounts of fuel.
The thrust-to-weight ratio of the Mainsail engine is excellent. This ratio is calculated by dividing the engine's thrust by its weight. It is a useful metric because it determines the maximum acceleration that any vehicle using that engine could theoretically achieve with minimal propellant and structure attached. For a vehicle taking off from the surface of the Earth using thrust alone, the thrust-to-weight ratio must be greater than one.
The Mainsail engine's high thrust, combined with thrust vectoring, can destroy poorly built rockets during ascent. Therefore, throttling down or limiting gimbaling is often recommended. Additionally, the Mainsail engine used to suffer from overheating issues when placed under certain fuel tanks, such as the Rockomax Jumbo-64 Fuel Tank, but this bug has since been resolved.
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The Mainsail engine can be paired with a big fuel tank for cruise control into orbit
The Mainsail engine is a heavy-duty, large-diameter liquid fuel engine that is used to provide thrust for larger rockets and lower stages. It is typically fuelled by large-diameter liquid fuel tanks like the Rockomax X200-32 Fuel Tank. The Mainsail engine has a reasonably high atmospheric Isp of 285s and a low vacuum Isp of 310s. This makes it a common choice for lifting large stacks of liquid fuel tanks into orbit and beyond, or propelling large heavy-lift vehicles.
The Mainsail engine's thrust vectoring gives it good pitch and yaw control, which greatly eases first-stage stability. However, care must be taken to not allow the engine's high thrust to destroy poorly built rockets in the middle of ascents. Throttling down or limiting gimbaling is often recommended to prevent this.
Prior to version 0.22, the Mainsail engine would quickly explode from overheating when run on maximum throttle and placed under a Rockomax Jumbo-64 Fuel Tank. This issue can be mitigated by placing a small strut or fuel tank between the engine and the Jumbo-64.
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Frequently asked questions
The RE-M3 "Mainsail" Liquid Fuel Engine is one of the heaviest and most powerful large-diameter liquid fuel engines. It can consume large amounts of fuel, with an average fuel consumption of 170 grams per hour per horsepower, or 250 grams per hour per horsepower, according to more conservative estimates.
You can calculate the amount of fuel required for the mainsail engine by multiplying the horsepower rating by the specific fuel consumption average, then dividing that by the fuel-specific weight. Alternatively, you can divide the total engine horsepower by 10 for gas engines or 0.6 for diesel engines.
Several factors influence the fuel consumption of the mainsail engine, including engine size and power, the number of cylinders, hull type and shape, wind direction, and water and weather conditions.
To improve fuel efficiency, consider throttling down or limiting gimbaling. Additionally, placing a small strut or fuel tank between the engine and the fuel tank can help mitigate overheating issues that lead to fuel inefficiency.
The fuel consumption of a sailboat depends on its size, with small sailboats using 0.5-1 gallon per hour, average sailboats using 1-2 gallons per hour, and large sailboats using 2-3 gallons per hour.
